uschindler commented on issue #14731:
URL: https://github.com/apache/lucene/issues/14731#issuecomment-3057432027
> Note, we do not enable the InfoStream logger for IndexWriter ("IW"), which
would have let us see the original error, I believe because it may be noisy
given these fatal errors and detailed logs for normal operations are both
logged as messages with no concept of a log level. Other libraries we use tend
to support slf4j for logging.
There are adaptors for InfoStream logging available. Lucene ships with one
for java.util.logging but you can either redirect JUL to SLF4J or LOG4J (its
described in the documentation / migration guide) or write your own. See
https://lucene.apache.org/core/10_2_0/core/org/apache/lucene/util/JavaLoggingInfoStream.html
for the JUL implementation (it expands the component names, but yes we have no
log lkevels so you can give it). As far as I remember, Solr uses DEBUG by
default if you enable it.
Lucene Core has intentionally no external dependencies.
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